Automatic self-adjusting pneumatic-music-player action-valve.



No. 894,007. PATENTED JULY 21, 1908. v. E. B. HOUGH. AUTOMATIU SELFADJUSTING-PNEUMATIC MUSIC PLAYER ACTION VALVE.

APPLIOATION FILED NOV. 5, 1907.

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' f N -T STATES; i g-Enr o EARL B. nouen, orsTocKTo CALIFORNIA, ASSIGNOR'ro IRVINE AND.

PANY, or STOCKTON, CALIFORNIA, AGORPORATION.

men;

House 00M- Specification of Letters Patent.

"Patented Juiyzi, 1908.

Application filed Novembr 5, 1907. Serial No. 400 785.;

To all whom it may concern: House, a

State of California, have invented certain .new and useful Improvementsin Automatic Self-Adj usting PneumatiC-Music-Player Action-Valve's; andLido declare: the following to be a full, clear, and exact descriptionof the same, such as will enable others skilled in' the art towhichitappertains tofilak and use thesarne, referencebeing-hadfto the; Iaccomp anying drawings ,and to the characters of reference markedthereon, which form a part of this application.

This invention relates to "music* players and-[particularly to thattypeknown as I pneumatic, any object being. to provi'de'a'valve-mechanism which will'automatically easilyinstalledj and repairedifnecessary; These-tobjectsll accomplish by'lmeans of a operate accordancewithjt'he pneumatic action .of the deviceonwhich it is installed andunseat and. resea-t-aitself 'automatically; and in'a thorough a'i'idefiective;manner,

Also .one which will besimple and inexpen slve of constructlon,and'onegwhich can be valve suitably seated and-having a stem so disposedas to permit saidqvalve to oscillate freely in respect the'retoj also bya c0rrelative construction and jarran ementi of parts whereby the saidvalve wil operate in ac cordance with the-pneumatic action thereof; alsoby such other and further construction aswill appear by a perusal'of.the"following specification and claims.

In the drawings similarlcharactersof reference indicate, corresponding.partsin the several views.

Figure 1 is a side-elevation of a piano key showing my improvedpneumatic valve .mechanism connected therewith. #Fig. 2 is an enlargedsectional view of the pneumatic action mechanism; Fig. 3 is a sectionaling the same with thelpush rod 3'.

view taken relatively one line a! a: of Fig. 2'.'

Fig, 4 is a sectional view of a valvei Fig. .5 is a fragmentarydetached-view of valve stem and pivot.

Referring now more particularly to the characters of reference on thedrawings 1 designates a keyof the instrument having an adjustment screwmechanism 2' connect;-

418 3 dowel slidabl disposed'heneath th rear of the key 1 and having apin 5 extendof a-ibellows 7 secured to a structure 8.

1 9- is an air passage leading fromthe belber 10 a port 11 leads totheatmosphere and passages 12-5I'ead into avacuum chamber 13.

posed a fleiiible diaphragm-16. Also disposedprovided. With. a centralsocket 21 through" ll 'which is extended a'pin' 22. :Hung 'on said i pin22 is a valve stem'in such manner as to permit the said valvetooscillate freely with J through a slot 12*, which acts asa' guide-:disk 24 normally seated on the diaphragm. 16. .25'is" an openingleading from the chamber instrument, while-.26 is'a' pipe 'leading from27,;over whicli'runs the usual record sheet 28. g 29 is "a sheet of.strong paper or similar posed ends of the chambers '13 and 15 for apurpose as -will appear.

In practice the above'described' mechan-- lism is. of course connectedwith each andv 4 normally out of engagement with the key 1.

. Then when a perforation. in the )aper 28 passes over the slot in thetracker .oard the vacuum in the chamber 13 suddenly draws avquantity ofair mto the ohamher-15,

upward, unseatingthe valve .18 from the of the leather 19 on said vpassages 12 and closing the port 1-1 by means a ve 18, thus per- I 14 isan openingfrom the'chamber 13 into a-chai'nbe plii over which opening 14is disrom the chamber 13 to the chamber 15 is 'a' respect to said stem;said stem extendingtherefor, into the chamber 13 and having a saidchamber 15to' the usual tracker board thereby forcing. the diaphragm 16and disk: 24

.ing through-an arm 6 secured to the bottom lows 7 'into' a chamber.10-from which cham i 13 to the main suction mechanism of the ;material-which forms the cover'for the exevery key. When this mechanism isin itsion and thus engaging the key 1, causing it to suitably op erate thehammer mechanismand produce music.

25 exhausts the air from the cham er 15 through bleed hole 17 as hasbeen described,

the diaphragm 16 resuming its normal position, thus permittingntlievalve 18 to rese'at itself over the assages 12. In this connection themain eature of=my invention is the fact that the valve 18 is capable offreely oscillating with respect to its stem 23- which permits it toadjust itself automatically and perfectly over the-passages 12, thuspreventing any possibility of air getting into the chamber 13 until itis desired. Owing to valve stem-23 being attached to-valve18, whichvalve 18 is given a free oscillation on valve stem 23, asdescribed,thesaid valve 18 is pulled'back and seated over openings 12 by thedownward suction of diaphragm 16, thus giving the valve 18 a rapid andpositive motion without de ending on springs or gravity and by theoscillation-of valve 18 it will seat itself at any angle at which seatscontaining openings 12 and 11 might be with relation Then when the saidperform. tion passes off the tracker board, closing the slot therein,the suction through the o eningto each other. When" the valve18 hasreseated itself as described the bellows again fill with air through theport 11 and passage 9-, thus carrying the dowel 4 out of engagement withthe key 1, as described.

Thus it will be seen that I have objects of the invention as set forthherein.

While this specification-sets forth in de-.

roduced such a device as substantially fulfi s all the tail the presentand preferred features of the constructionof mydevice, still smalldeviations therefrornmay be resorted to,' none ofv which'willg however,form a departure from the spirit of the invention. Having thus describedmy invention, what I claim as new and desire to secure by LettersPatent, is c 'In a deviceof .the character described, a structure havinga plurality ofchambers, there being air passages connecting the same, avalve seat over oneofsaid passages and comprising a head having a socketformed therein, apin disposed through said socket,

a stem' pivoted on said pin, said head being capable of freelyoscillating with respect to said stem, as set forth.

In testimony whereof I affix my signature inpre'sence of, two witnesses.I

' EARLB. HOUGH. Witnesses:

PERCY S WE'BsTER, JOSHUA B. WEBSTER.

